Improvement in spark-arresters



4beingrhad to the accompanying drawings, and to the ing'a smoke-stack which -will admit o f its top4 being side, L with an inverted'eonicalfdeeeton l aflix this vcap over the top of the stack, and in suchfa'position that the pointof the dedector will. `come exactly overV the centre of. the top of :the stack,

A sparks and oinders down into the flare, from whence furnace, or elsewhere.

nii-:iat sant Y l 'Letters-Patent No. 97,636, elated December?, 1,869.

IMPROVEMENT IN SPARK-ARRESTERS.

The Schedule `referred. to'ili these Letters Patent and making part of the same.

To all whom 'it may conce/fn: 4

Be it known that I,W.-IE. HAYES, of'Durand, in the county 4.of Pepin, and State of Wisconsin, have invented a new and improved Spark- Annihilating SlnokeStaek for locomotive, steamboat, `and 4other engines; and I do hereby'deelare that the followingis a full and exact `description thereof, reference letters of reference marked thereon, 'in which-7 Figure 1 representsv a'perspective view of the inventiomand l .I i

*Figure 2 represents a sectional view of the same.

Similar letters; of reference indicate corresponding parts. l

lhe nature of my invention consists in constructmade open, so as to secure full draught, and at the same time prevent anything but/smoke and very Jdue particles of carbon escaping from it into the air, thus obviating thedanger and annoyaneeof flying sparks and cinde'rs.

To do this, 'I construe-t iny.smokestack with' a metal cap,l about twenty inches Vlarger in diameter thanthefbody ofthe stack,' andv provided, on. its inand sgmedist'ance above it. A

Around theJ body ofthe stack, and about thirty inches `from its top,I ailix a flare, about ten inches wider in diameter than the stack, and I ,connect rthe cap andA this flare"V together'by a colla'i or easing of line-,mesh wire-cloth, or other perforated material.

By this arrangement, the blast or draught'of the stack forces thesrnoke and sparks in ,contact with the metal cap and its `'conical dedector, and thereby reverses the draught downward on the outside of the stack, driving the smoke and finer particles of carbon out through the-periorated collar or casing, and the they are carried, by means of a pipe or sheet-iron casing, placed `around the stack, and' deposited in the -ln the accompanying drawings- A: represents the Vshank or body of" the smokestack.

A B represents the metal cap or bood, and a., its con'- ical deilector. i i

b b are bars, holding the cap B in position, above the top of the stackA.

` The sides of the cap B are made to centre in toward the stack A.

i G is'the iron lare or gutter surrounding the stack A, to Whichit is attached by the band c.

D represent-sthe'collar or casing of fine-mesh wire cloth, or etherperforated material, connecting the cap -B andilare O together, and enclosing the top of the stack A.

The perforated casing Dis bound to the cap Band' preferred.

E is a. metal flue, about three inches in diameter, running from the flare C, into which it opens, down along the stack.

The invention operates as follows:

rlhe blast (i1-draught of the Astack A forces the smoke and sparks in contact with lthe cap B, and its conical deflector a, and thereby reverses-the draught downward on the outside of the stack A, driving the smoke and finer particles of carbon out through the perforated casing D, and the sparks and c inderls down into the dare G, from 'whence they are `carried through thel tube ,llgdownV intorthe reservoir F, or into the furnace, or, if on a boat, int-o the wheelhouses, or any other suitable place. E'

The manner in which the cap B is made and fixed over and above the top of .the stack A, withits 'sides' centring in toward the same,'reverses the draught,v

and drives it down on the outside'of the stack, and at the samel time i increases the heat at the top of the stack, and rarees the air and products of combustion to such a'degree that the draught: of the stack is very much increased thereby; and the arrangement of the perforated casing D around andn'early all 'below the top, of the stack A, admits of th entire top of the saine being left open, thereby securing a full draught, which, passing longitudinally acrossthe surface of the casing D, precludes the possibility of its fouling or choking up, and permits nothing to pass .from the stack into theair but smoke and thefiner particles of carbon.

lVhat I claim as my invention', and desire to secure by Letters Patent, is

1; The combination of the adjustable straps or draw-bands d d, and their appurtenances f g Yh, arranged and operating substantially as set forth, with the cap B, dare G, and outer casing D, as specified.

2. The combination, with thestack A, of the. perforated body of the outer casing surrounding the upper portion of the stack A, and the dare O, arranged as described.

. 3. The outer casing of the top of the stack A, consisting of the are C, cap B, and wireegauze or perforated body D, arranged as described.

In testimony that I claim the foregoing invention, I have hereunto-set my hand, this 23d day of December, `1868.

W. E. .HAYES 

